dowd points to michelle obama's performance. and to bill clinton at that moment. >> no president -- no president, not me, not any of my predecessors, no one could have fully repaired all the damage that he found in just four years. >> reporter: the romney campaign tonight calling the bounce a, quote, sugar high from the convention. but the reality from the obama economy hasn't changed. the number most important, october 3rd, debating president obama. less than one month until that first debate. how important are the debates going to be? >> i think the debates are very important. particularly when you have a small sliver that has to make up their mind. >> reporter: david muir, abc news, mansfield, ohio. >>> a report out today highlights a security threat at hospitals around the country. about 80% of high-risk hospitals do not properly secure radioactive material that could be used to make a dirty bomb. "the washington post" says among the examples in the government report, is a big-city hospital that gets highly radioactive chemi